US1690726A - holinger - Google Patents

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Publication number
US1690726A
US1690726A US1690726DA US1690726A US 1690726 A US1690726 A US 1690726A US 1690726D A US1690726D A US 1690726DA US 1690726 A US1690726 A US 1690726A
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US
United States
Prior art keywords
pear
crease
resonant
combination
sound
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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English (en)
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Publication date
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Publication of US1690726A publication Critical patent/US1690726A/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers

Definitions

  • This invention of sound waves in general; but is more parmaterial located between the poles o ticularly designed, so far as the present emmanent magnet.
  • the present invention pair of goose comprises certain improvements on construcside of the permanent 3111321181]: P
  • the pear-shaped resonant member may be formed in a variety of ways but I prefer to make it of a series of strips 16, 16", 16 of resonant material, such as ⁇ vood,;or pa -pei which are joined together at the upper end by being cemented to a-ring-shaped piece of wood or cardboard 21 and to an overlapping cap plate'Q-Q of similar material.
  • 17" represents an annular fold of wave-like cross section 'in the wall of the resonant member extending aroim'd the same approximately-midway-between its ends. and; 1 8. l8 amperforaerahly located in said crease.
  • a sound reproducing device comprising i combination, a; hollow nem'her .ot';suhs(;mtially pear shape having one portion in the form of a segment of a sphere, and th rest substantially-cone shaped, both madcor' thin,
  • a sound reproducing de ice comprising, 'in combination,adrollow member of substantially pear shape having one portion in the ferm of a-segment of asphere, and the rest substantialh 'c-oneshapedg'both made oft-Inn resonant materiah'zand.nieans for imparti ng sound v'ibnations to said member attached to the smaller endthereof, togethorwith a support for said member attached to its larger en'd.
  • a Boundneproduoing:dev-iee comprising, in combination, a--liolld ⁇ v,. thin-walled, pearshaped:-resonant;member closed at its :Iaitger .end, having -an 'opening in itsside, and being -openaat titsesifnallenend, a iaupport ⁇ or said inemberia'ttached to: its langer en'd, and aneans fomimpahtiaag sonndwibrations attached :to
  • nitssmallerendi 5 I :lOhfIn a sound jlreproducing device :suit- ,able ior use; in Zradio. apparatus; having an ele c tron1agnet, the -coils-of;- which are adapted to be includedain a reproducing circuit, the combination, .with the above recited. appara- ..tus,,of .ahollow, substantially pear-shaped member made of thin, resonant material, having an opening in its side, and an armature for said electromagnet fastened to said member at its smaller end.
  • a structure such as defined in claim 10 combined with a support for said pear-shaped member attached to it at its larger end.
  • a sound reproducing device suitable for use in a radio receiving set having an electromagnet, the coils of which are adapted to be included in a reproducing circuit
  • a sound reproducing device suitable for use in a radio receiving set having an electromagnet, the coils of which are adapted to be included in a reproducin circuit
  • a sound reproducing device suitable for use in a radio receiving set comprising, in combination, a horseshoe magnet, a hollow, substantially pear-shaped resonant member made of thin, stiff material and having an opening at its smaller end, a support for said member extending upward through said opening to the upper and larger end of said pearshaped member, an annular armature for said magnet surrounding said support and fastened to the wall of said resonant member at its smaller and lower end, two curved springs rigidly mounted with reference to said magnet and supporting said armature at diametrically opposite points thereof, and adjusting screws mounted in, and bearing upon, said spring and adapted to flex the same, whereby on the flexing of said springs any desired adjustment of said armature with reference to said magnet may be secured.
  • a sound reproducing device comprising, in combination, a hollow obovoid member with its larger end of approximately spheroidal shape and its smaller end of gen erally conical shape, both formed of walls of thin, stiff, but elastic material, with an opening therein, and means for imparting sound vibrations attached to one portion of said member.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
US1690726D 1927-04-23 holinger Expired - Lifetime US1690726A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US644982XA 1927-04-23 1927-04-23

Publications (1)

Publication Number Publication Date
US1690726A true US1690726A (en) 1928-11-06

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ID=22056397

Family Applications (1)

Application Number Title Priority Date Filing Date
US1690726D Expired - Lifetime US1690726A (en) 1927-04-23 holinger

Country Status (3)

Country Link
US (1) US1690726A (fr)
DE (1) DE511026C (fr)
FR (1) FR644982A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379213A (en) * 1979-11-21 1983-04-05 Bm-Elektronik Meletzky Kg Electroacoustical converter
US4699242A (en) * 1984-12-28 1987-10-13 Daikin Trade & Industry Co., Ltd. Magnetic speaker
US20060196723A1 (en) * 2005-03-03 2006-09-07 White Fred I Balloon speaker asembly
US8240426B2 (en) * 2010-08-19 2012-08-14 Bose Corporation Three dimensional acoustic passive radiating

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379213A (en) * 1979-11-21 1983-04-05 Bm-Elektronik Meletzky Kg Electroacoustical converter
US4699242A (en) * 1984-12-28 1987-10-13 Daikin Trade & Industry Co., Ltd. Magnetic speaker
US20060196723A1 (en) * 2005-03-03 2006-09-07 White Fred I Balloon speaker asembly
US8240426B2 (en) * 2010-08-19 2012-08-14 Bose Corporation Three dimensional acoustic passive radiating

Also Published As

Publication number Publication date
DE511026C (de) 1930-10-25
FR644982A (fr) 1928-10-17

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